"And you like it so much." Stiles' obvious enjoyment of his mouth made it that much more fun to bring him off again and again, no matter what they were doing. The fact that Stiles tasted great everywhere didn't hurt matters either. "And I love to do it, love to watch you, feel you when the pleasure gets to be too much and you have to come."
Staying tied to Stiles wasn't a measure of bragging rights for Derek. Making him orgasm repeatedly -- that was. But it wasn't something he would take to the internet -- this was for them. And the reason he was still so swollen had everything to do with Stiles, and the way his mate aroused him time and time again.
His trust vocalized was enough to have a shiver run down Derek's spine, muscles reflexively tightening, and he muffled his moan as he tightened up around the plug. "Fuck," he rasped out. There was no lie, no dip in Stiles' heart beat, no change in his scent. He smelled as good as he always did and Derek took a deep whiff of it in.
"Love you too." He let out a happy little rumble at Stiles' hand in his hair again -- he loved that -- but the offering was too much for him to resist. One arm looped around Stiles' waist, almost lifting him as he kissed the spot again, licked it as if priming it, and very blunt, very human teeth sank into his skin.
It wasn't like turning someone. This felt -- it felt -- good, and he moaned as his body curled into his mate's, knot throbbing inside of him as he whined through another mini-orgasm and blood sparked across his palate. That was it, that was all he needed to stop and return to licking the bite frantically, hoping to soothe whatever pain it caused.